If you are importing the tax data then that could be the problem. There could be hidden characters in any of the boxes on the TurboTax Form 1099-G.
Can you manually enter All the information required for the TurboTax Form 1099-G without importing and leave the entry for Federal ID number last. See if that will work.
Otherwise you will need to contact TurboTax support for assistance with this issue.
Support is open from 5am to 5pm Pacific time, Monday thru Friday
Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/
